Added NTheory methods to Binding List

Author: rajithv

ext/symengine/symengine.c

@@ -5,6 +5,7 @@
 #include "ruby_rational.h"
 #include "ruby_constant.h"
 #include "ruby_function.h"
+#include "ruby_ntheory.h"
 #include "symengine.h"
 
 ///////////////////
@@ -145,4 +146,14 @@ void Init_symengine() {
     rb_define_module_function(m_symengine, "zeta", cfunction_zeta, 1);
     rb_define_module_function(m_symengine, "gamma", cfunction_gamma, 1); 
 
+    //NTheory Functions as Module Level Functions
+    rb_define_module_function(m_symengine, "gcd", cfunction_gcd, 2);
+    rb_define_module_function(m_symengine, "lcm", cfunction_lcm, 2);
+    rb_define_module_function(m_symengine, "nextprime", cfunction_nextprime, 1);
+    rb_define_module_function(m_symengine, "mod", cfunction_mod, 2);
+    rb_define_module_function(m_symengine, "quotient", cfunction_quotient, 2);
+    rb_define_module_function(m_symengine, "fibonacci", cfunction_fibonacci, 1);
+    rb_define_module_function(m_symengine, "lucas", cfunction_lucas, 1);
+    rb_define_module_function(m_symengine, "binomial", cfunction_binomial, 2);
+
 }